package WashCard;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class CardDemo {
    public static final String[] suits={"♥","♠","♣","♦"};
    public List<Card> buyCard(){
        List<Card> cardList=new ArrayList<>();
        for (int i = 0; i < 13; i++) {
            for (int j = 0; j < 4; j++) {
                int rank=i;
                String suit=suits[j];
                Card card=new Card(suit,rank);
                cardList.add(card);
            }
        }
        return cardList;
    }
    public void shuffle(List<Card> cardList){
        Random random=new Random();
        for (int i = cardList.size()-1; i >0; i--) {
            int index=random.nextInt(i);
            swap(cardList,i,index);
        }
    }
    private void swap(List<Card> cardList,int i,int j){
        Card tmp=cardList.get(i);
        cardList.set(i,cardList.get(j));
        cardList.set(j,tmp);
    }
    public List<List<Card>> play(List<Card> cardList){
        List<Card> hand0=new ArrayList<>();
        List<Card> hand1=new ArrayList<>();
        List<Card> hand2=new ArrayList<>();
        List<List<Card>> hand=new ArrayList<>();
        hand.add(hand0);
        hand.add(hand1);
        hand.add(hand2);
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j < 3; j++) {
                Card card=cardList.remove(0);
                hand.get(j).add(card);
            }

        }
        return hand;
    }
}
